Grate.



J. W WEBB.

GRATE.

APPLICATION FILED DEG. 2, 1908.

NVE/WOR Jclmes M/f ATTORNEYS T l" TS-SHEET 1.

Patented Aug. 17, 1909.

WITNESSES J. W. WEBB.

GRATE. APPLICATION FILED DEC. 2, 1908.

INVENTOR 7am6ar 7% 1% ATTORNEYS 2 SHEETS-SHEET 2.

Patented Aug. 1?, 1909.

WITNESSES JAMES 'WILLIAM WEBB, OF BEGKS RUN, PENNSYLVANIA.

GRATE Specification of Letters Patent.

Patented Aug. 17, 1909;

Application filed December 2, 1908. Serial No. 465,645 1 To all whom -'itma'y concern:

Be it known that 1, JAMES 1V. When, a citimu of the UnitedStates, and a resident of Becks Run, in the county of Allegheny and State-of Pennsylvania, have invented a new and Improved Grate, of which the following is a full, clear, and exact description. The grate is more especially designed to be continuously movable and used in connection with-an automatic stoker, enabling perfeet combustion and the consumption of a gradeof coal which could not be used under less favorable conditions.

ing drawings forming a part of this specification, in which similar characters of 'reference indicate corresponding parts in all the views. I, v

Figural isa longitudinal section on the line 11 of Fig. 2 through a firebox having grate apphed thereto; Fig.2.

my improved is a horizonta section through the firebox, showing the grate in plan; Fig.- 3 isasection substantially on the line 3- 3 of Fig. 1; Fig. Lis a similar section on the line of Fig. 1; Fig. 5 is an edge view of one of the rockers for each section of the grate; Fig. 6- is a similar view of the other rocker for each section of the grate; Fig. 7 is a side view of'one of the grate bars; and

Fig. 8 is a side view of the grate bar which"- alternates with the grate bar shown' in Fig. 7.

. To the side walls of the firebox are suitably attached downwardly and forwardlyinclined side bars 10, each having trunnion notches 11 spaced at proper intervals and alining with the similar notches in the other bar. In each set of these notches is journaled a cross-shaft 12, each carrying a transverse section of the grate, which con- "sists of bars 1'3 and 14 alternating with each other, and rockers 15 and 16, the bars being spaced apart on the cross-shaft by spacing washers 17 and the rockers having arms 18 and 19 respectively, attached to the shaft be- 1 ad acent sect on, and means for. rocking the ofsupport on the shaft-12, the lug 13 being centrally slotted on tllQbOttOlll edge to clear the cross-plate of the rocker 15, and the lug '14 being also centrally slotted to :receiveand engage the top edge of this-plate. The outeredge of the lug 13 is downwardly and out-- wardlyinclined to receive the cross-plate of the rocker 16, the arm 19 of this rocker-being ofiset, as shown in Fig. 6, tobring'the plate Q16 in proper operative position. Ehe heads or forward ends of the bars'of each. grate @section overhang the rearends of the bars of the adjacent grate sections, and-the bars of ithe several sections ale-arranged in approxi- Each rocker of the several grate sections has a depending arm, the arms 20 of the rockers 15 being pivot-ally coninate alinement.

nected to a shifting bar 21, and the arms 22 of the rockers 16 being pivotally connected to a shifting-bar 23, the shifting bars in turn being respectively operatively connected to eccentrics 24' and25 by. connecting rods 26 and 27. The eccentrics are oppositely arrangedon a driven shaft 28 located, at the outside of the firebox. v

From the construction described it will be apparent that when the shaft 28 is set in motion, the shifting bars 21 and 23 will alternately move n opposite dnectlons and impart arocklng movement to the grate bars which they respectively control, thus causingthe alternate bars, both as regards the same section and different-sections of the grate, to rock in opposite directions, this continuous movement keeping the fire clear of clinkers and insuring perfect combustion.

When the shifting bars are in intermediate positions of their movement, the upper faces of the grate bars of eachgrate section will be located in the'same horizontal'plane, and the grate will present a succession of steps.

wtween the end barsand adjacent bars and 1 7 "serving asspacing members therefor. The

bars 13 and 14,as best shown in Figs. 7 and 8 respectively; embody in their construction lugs 13 and 1t?" depending at their points-0o Having thus described my invention, I

claim as new and desire to. sccurebyLetters Patent:

1. A grate divided into transverse sections, each section having rocking grate bars .spaced apart, with the bars of the'sever'al sections arranged in. alinement, and the bars of each section overhanging the bars of an alternate bars, both as regards the sameand difierent sections, in opposite directions.

2; A grate composed of a series of sections arranged at different elevations; with one section overlying the next adjacent section,

and each section having a series of rocking grate bars spaced apart, and means for si-' multaneously rocking the alternate barsof each section in opposite directions;

3. A grate divided into sections, each sec;

tion havinggrate bars, with the bars of different sections arranged in substantial alinev ment and the bars of each section overhang-- Reach rocker in operative engagement with the alternate grate bars.

5. In a grate, a cross-shaft, grate bars pivot'ally supported on'thecross-shaft, with the alternate bars having sl'otted bottom edges,-

a rocker supported on the cross-shaft having a cross-plate in engagement with the slots of said bars, and a rocker supported on the cross shaft and havinga' cross-plate in 0p? erative engagement With' the reinainin bars .6. A grate composed of a. series 0 I over; hangin'gsections, each section comprising a series of-rocking grate bars, with rockers in operative e'ngagementW-ith the alternate bars 'of'each section shifting bars connected to.

the rockers, and: means for simuitaneeusiy actuatingthe shifting bars inoppesite-directions.

7 In a grate, a; series of-cross-shazttii grate.-

bar's pivo't'ally supported on each Terese-shaft;

eachgra'te bar having a dependingisiotted lug, a' rocker supported "from v eaciibshaftyand in engagement with the sI ts Qfthehigscf alternate bars, asecond rocker .supportedffon each cross-shaft and. in operative engagement with the the'iugs of-the remaining bars, a shifter connected 'with each'set of rockers, o

and means for simultaneously actuating the 'shiftersin oppcsitedirections. In testimony whereof I-have s gned my name to this s'peclfication 1nthe presence at two subscribing witnesses.

JAMES W ILLIAM XVEBB'. Vitnesses:

THOMAS Enxns'r TUMLINSON, Jon TEBB. 

